'\" te
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.\" Portions Copyright (c) 2006, Sun Microsystems, Inc. All Rights Reserved.
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.TH MP_SETTPGACCESS 3MPAPI "Feb 15, 2006"
.SH NAME
MP_SetTPGAccess \- set a target port group access state
.SH SYNOPSIS
.LP
.nf
cc [ \fIflag\fR\&.\|.\|. ] \fIfile\fR\&.\|.\|. \fB-lMPAPI\fR [ \fIlibrary\fR\&.\|.\|. ]
#include <mpapi.h>

\fBMP_STATUS\fR \fBMP_SetTPGAccess\fR(\fBMP_OID\fR \fIluOid\fR, \fBMP_UINT32\fR \fIcount\fR,
     \fBMP_TPG_STATE_PAIR\fR \fI*pTpgStateList\fR);
.fi

.SH PARAMETERS
.sp
.ne 2
.na
\fB\fIluOid\fR\fR
.ad
.RS 17n
An object ID that has type \fBMP_MULTIPATH_LOGICAL_UNIT\fR.
.RE

.sp
.ne 2
.na
\fB\fIcount\fR\fR
.ad
.RS 17n
The number of valid items in the \fIpTpgStateList\fR.
.RE

.sp
.ne 2
.na
\fB\fIpTpgStateList\fR\fR
.ad
.RS 17n
A pointer to an array of data structure \fBMP_TPG_STATE_PAIR\fR. This array
must contain the same number of elements as \fIcount\fR.
.RE

.SH DESCRIPTION
.sp
.LP
The \fBMP_SetTPGAccess()\fR function sets the access state for a list of target
port groups. This allows a client to force a failover or failback to a desired
set of target port groups. This is only valid for devices that support explicit
access state manipulation (i.e., the field \fIexplicitFailover\fR of data
structure \fBMP_TARGET_PORT_GROUP_PROPERTIES\fR must be true).
.sp
.LP
This API provides the information needed to set up a  \fBSCSI SET TARGET PORT
GROUPS\fR command.
.sp
.LP
The plugin should not implement this API by directly calling the \fBSCSI SET
TARGET PORT GROUPS\fR command. The plugin should use the MP drivers API (for
example, \fBioctl\fR) if available.
.sp
.LP
There are two reasons why this API is restricted to devices supporting explicit
failover commands. Without an explicit command, the behavior of failback tends
to be device-specific.
.sp
.LP
When the caller is finished using the list it must free the memory used by the
list by calling         \fBMP_FreeOidList\fR.
.SH RETURN VALUES
.sp
.ne 2
.na
\fB\fBMP_STATUS_ACCESS_STATE_INVALID\fR\fR
.ad
.sp .6
.RS 4n
The target device returns a status indicating the caller is attempting to
establish an illegal combination of access states.
.RE

.sp
.ne 2
.na
\fB\fBMP_STATUS_FAILED\fR\fR
.ad
.sp .6
.RS 4n
The underlying interface failed the command for some reason other than
\fBMP_STATUS_ACCESS_STATE_INVALID\fR.
.RE

.sp
.ne 2
.na
\fB\fBMP_STATUS_INVALID_OBJECT_TYPE\fR\fR
.ad
.sp .6
.RS 4n
The \fIluOid\fR does not specify any valid object type. This is most likely to
happen if an uninitialized object ID is passed to the API.
.RE

.sp
.ne 2
.na
\fB\fBMP_STATUS_OBJECT_NOT_FOUND\fR\fR
.ad
.sp .6
.RS 4n
The \fIluOid\fR owner ID or object sequence number is invalid.
.RE

.sp
.ne 2
.na
\fB\fBMP_STATUS_INVALID_PARAMETER\fR\fR
.ad
.sp .6
.RS 4n
The \fIpTpgStateList\fR is null, or when one of the TPGs referenced in the list
is not associated with the specified MP logical unit, or the \fIluOid\fR has a
type subfield other than \fBMP_OBJECT_TYPE_MULTIPATH_LU\fR.
.RE

.sp
.ne 2
.na
\fB\fBMP_STATUS_SUCCESS\fR\fR
.ad
.sp .6
.RS 4n
The operation is successful.
.RE

.sp
.ne 2
.na
\fB\fBMP_STATUS_UNSUPPORTED\fR\fR
.ad
.sp .6
.RS 4n
The API is not supported.
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(7) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	T{
Standard: ANSI INCITS 412 Multipath Management API
T}
_
MT-Level	Safe
.TE

.SH SEE ALSO
.sp
.LP
.BR libMPAPI (3LIB),
.BR attributes (7)
.sp
.LP
\fIMultipath Management API Version 1.0\fR
